The U.S. military has spewed $21 billion in emissions since 9/11

        June13, 2019 Bloomberg | United States | fossil fuels: emissions

The U.S. armed forces are the world's leading institutional GHG emitter, larger than even some countries, emitting 1.2 billion metric tons of CO2e from 2001 to 2017, more than 2% of a global total of 53.5 billion, 400 million tons of which were in major war zones. At current California cap-and-trade costs of $17.45/ton, the bill would be $21 billion.